SpaceX rocket and its cargo explode on launch pad In Florida

Smoke rises from a SpaceX launch site at Cape Canaveral, Fla., on Thursday. NASA said SpaceX was conducting a test firing of its unmanned rocket when a blast occurred. (Photo by Marcia Dunn/Associated Press)
Two days before SpaceX was to launch a communications satellite that would widen Internet access in Africa, an unmanned rocket and its payload were destroyed in an explosion on a launch pad in Cape Canaveral, Fla. Smoke billowed from the pad where the AMOS-6 satellite was to be launched Satu